The Journal of Experimental Medicine
Cytokines Montreal 2008
  Home | Help | Feedback | Subscriptions | Archive | Search | Table of Contents

Published online 3 July 2000.
This Article
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Citation Map
Services
Right arrow Email this article
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new content in the JEM
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via CrossRef
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Xia, X.-Z.
Right arrow Articles by Hsu, H.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Xia, X.-Z.
Right arrow Articles by Hsu, H.
Right arrowPubmed/NCBI databases
*Gene*GEO Profiles
*HomoloGene*Nucleotide
*Protein*UniGene
*Substance via MeSH
Social Bookmarking
 Add to CiteULike   Add to Complore   Add to Connotea   Add to Del.icio.us   Add to Digg   Add to Reddit   Add to Technorati  
What's this?
© The Rockefeller University Press, 0022-1007/2000/7/137/ $5.00
The Journal of Experimental Medicine, Volume 192, Number 1, July 3, 2000 137-144


Brief Definitive Reports

TACI Is a TRAF-interacting Receptor for TALL-1, a Tumor Necrosis Factor Family Member Involved in B Cell Regulation

Xing-Zhong Xiaa, James Treanorb, Giorgio Senaldic, Sanjay D. Kharec, Tom Boonee, Michael Kelleyd, Lars E. Theilla, Anne Colomberoa, Irina Solovyeva, Frances Leea, Susan McCabea, Robin Elliotta, Kent Minerc, Nessa Hawkinsd, Jane Guoc, Marina Stolinac, Gang Yua, Judy Wangb, John Delaneye, Shi-Yuan Menge, William J. Boylea, and Hailing Hsua
a Department of Inflammation, Amgen, Thousand Oaks, California 91320-1799
b Department of Neurobiology, Amgen, Thousand Oaks, California 91320-1799
c Department of Pharmacology and Pathology, Amgen, Thousand Oaks, California 91320-1799
d Department of Protein Chemistry, Amgen, Thousand Oaks, California 91320-1799
e Department of Process Science, Amgen, Thousand Oaks, California 91320-1799

Correspondence to: Hailing Hsu, Amgen, One Amgen Center Dr., Thousand Oaks, CA 91320. Tel:805-447-1165 Fax:805-447-1982 E-mail:hhsu{at}amgen.com.

We and others recently reported tumor necrosis factor (TNF) and apoptosis ligand–related leukocyte-expressed ligand 1 (TALL-1) as a novel member of the TNF ligand family that is functionally involved in B cell proliferation. Transgenic mice overexpressing TALL-1 have severe B cell hyperplasia and lupus-like autoimmune disease. Here, we describe expression cloning of a cell surface receptor for TALL-1 from a human Burkitt's lymphoma RAJI cell library. The cloned receptor is identical to the previously reported TNF receptor (TNFR) homologue transmembrane activator and calcium modulator and cyclophilin ligand (CAML) interactor (TACI). Murine TACI was subsequently isolated from the mouse B lymphoma A20 cells. Human and murine TACI share 54% identity overall. Human TACI exhibits high binding affinities to both human and murine TALL-1. Soluble TACI extracellular domain protein specifically blocks TALL-1–mediated B cell proliferation without affecting CD40- or lipopolysaccharide-mediated B cell proliferation in vitro. In addition, when injected into mice, soluble TACI inhibits antibody production to both T cell–dependent and –independent antigens. By yeast two-hybrid screening of a B cell library with TACI intracellular domain, we identified that, like many other TNFR family members, TACI intracellular domain interacts with TNFR-associated factor (TRAF)2, 5, and 6. Correspondingly, TACI activation in a B cell line results in nuclear factor {kappa}B and c-Jun NH2-terminal kinase activation. The identification and characterization of the receptor for TALL-1 provides useful information for the development of a treatment for B cell–mediated autoimmune diseases such as systemic lupus erythematosus.

Key Words: TACI, TNFR family, TALL-1, B cell stimulation, autoimmune disease


Add to CiteULike CiteULike   Add to Complore Complore   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us   Add to Digg Digg   Add to Reddit Reddit   Add to Technorati Technorati    What's this?


This article has been cited by other articles:



  Home | Help | Feedback | Subscriptions | Archive | Search
TABLE OF CONTENTS